I wear a dust mask when machine sawing PCB fiberglas. FWIW, the band saw does a very good job.
--- In Homebrew_PCBs@yahoogroups.com, DJ Delorie <dj@...> wrote:
>
> My regular HSS scroll saw blades are good for about a foot of pcb then
> they're toast. However, that's putting all the wear on only a few teeth.
>
> If you use a fence, the piece between the blade and the fence should be
> at least twice as long (parallel with the fence) as it is wide (between
> blade and fence) to reduce the risk of kickback. If it's not long
> enough, or too wide, use a miter or sled instead. I suspect for most
> pcb projects, a sled would be appropriate.
>